In hanging lasers



ELIJAH O. LAWRENCE, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN HANGING LAMPS.

Specification forming part of Letters Patent N 0. 186,939, datedFebruary 6, 1877; application filed December 11, 1876.

To all whom it may concern Be it known that I, ELIJAH O. LAWRENCE, ofChicago, in the county of (look and State of Illinois, have invented newand useful Improvements in Hanging Lamps; and I do hereby declare thefollowing to be a full, clear, and exact description thereof, which willenable others skilled in the art to which my.invention appertains tomake and use the same, reference being had to the accompanying drawing,forming part of this specification, in whichs Figure 1 represents asectional elevation of a hanging lamp, embodying my said invention. Fig.2 represents a front view of the same. Fig. 3 represents a sectionalplan of the same, taken on the line 00 00 in Fig. l; and Fig. 4represents an enlarged detail section of the same.

Like letters of reference indicate like parts.

My invention relates to that class of hanging lamps supported by cordsor chains, and so arranged as to admit of raising and lowering the lampto any desired height; and the object of my invention is to provide ameans of holding the lamp at any desired height to which it may beadjusted, and of supporting the lamp-shade so that the shade may beraised from the lamp as the latter is lowered, or to be raised orlowered together with the lamp, as may be desired. To that end myinvention consists in the combination of the several parts, ashereinafter described and claimed.

In the drawing, A represents the fount, and B the lamp proper, both ofwhich are constructed in the usual shape. 0 O are vertical rods, whichare permanently attached to the fount, on opposite sides of the same,and extend upward to, or nearly to, the top of the lamp-chimney, and areeach provided near the upper end with a boss, (I, as shown in Figs. 1and D. D is the lamp-shade, which may be constructed of any suitablematerial, and is provided on its inner side with lugs a a, projectinginward from opposite sides, as shown in Figs. 1 and 3, and each of whichis provided near its end with an aperture, through which the rods 0 (1respectively and easily pass, so as to allow the lugs to rest upon thebosses d d when the shade is in its proper position relative to thechimney. E is an annular metal rim, which is of the proper diameter tofit loosely into the upper part of the shade. F F are gravitatingweights, which are permanently attached to the upper edge of the rim, onopposite sides of the same, and are each provided with a sheave-wheel,c, journaled thereto, so as to freely revolve. G is a cross-bar, fromwhich the lamp and its co-operating parts are suspended. H H are thecords supporting the lamp, each of which is attached at one end to theupper ends of the bars 0 0, respectively, and extend upward oversheave-wheels f f, journaled to the cross-bar G, andfrom thence downwardunder the sheave-wheels e e, and thence upward to the end of thecross-bar G, and are permanently attached thereto.

The arrangement of said cords is such that as the lamp is made todescend the weights are carried upward together with the rim, and, bymeans of the gravity of. the rim and weights, which is equal to that ofthe lamp, the lamp is held at rest at any desired height. Permanentlyattachedto the inner side of the weights, and on opposite sides of therim, are eyebolts g 9, through which the cords H H loosely pass, for thepurpose of holding the rim in the same vertical plane with the shade.

J J are depending shafts, which are journaled within the lugs a a of theshade, and bent at their upper ends, so as to form a hook, n, as shownin Fig. 2.

The arrangement of said hooks is such that when the rim is resting uponthe shade the hooks, by a rotary movement of the shafts, are made totake over lugs h h, projecting inward on opposite sides of the rim, andthereby connect the rim and shade together, and so as to elevate theshade with the rim as the lamp is lowered for the purpose of trimmingthe wick. 7

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In a hanging lamp, the combination, with the weighted rim E and shadeD, of the lock ing-shafts J J, arranged to connect the rim with orwithout the shade, substantially as and shade together, substantially asand for and-for the-purpose specified. the purpose specified.

2. In a hanginglamp, the combination, with h I ELIJAH LAWRENCE the lampB, of the cross-bar Gr, cords H H, Witnesses: weighted rim E, shade D,and locking-shafts GEORGE BOHNEB,

J J whereby the said weighted' rimis elevated N. G, GRI'DLEY.

